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Images, UC QuakeStudies

A digitally manipulated image of demolition machinery, with the Hotel So in the background. The photographer comments, "Strange things happen when you use technicolor film".

Images, UC QuakeStudies

A digitally manipulated image of an excavator. The photographer comments, "This is a huge excavator in the Christchurch CBD. It is being used to clear away the enormous amount of rubble from the buildings being demolished. It seems that nearly all the big machinery from all other the world has been needed in the clean up of the earthquake damaged buildings and utilities".

Images, UC QuakeStudies

The claw of a digger. In the background is a stack of road cones. The photographer comments, "Digger Claw ready to start digging".

Images, UC QuakeStudies

A digitally manipulated image of the head of a digger resting on a pile of soil. The photographer comments, "You can go anywhere you like when you are a rock star".

Images, UC QuakeStudies

Machinery on a truck bed. The photographer comments, "Seeing this near the Christchurch earthquake red zone I was wondering if they are now going to use a giant catapult to knock down some of the remaining quake damaged buildings".

Images, UC QuakeStudies

The head of a digger resting on a pile of soil next to QEII Stadium. The photographer comments, "The deconstruction of the QEII stadium in Christchurch pauses on a Sunday".

Images, UC QuakeStudies

A digitally manipulated image of an excavator demolishing a house. The photographer comments, "My neighbour I thought was going to be one of the first to be rebuilt in the area after being damaged in the 22 February 2011 earthquake, but the builders have knocked it down and not returned yet".

Images, UC QuakeStudies

A digitally manipulated image of furniture and machinery. The photographer comments, "This furniture restoration company got caught in the middle of the Christchurch earthquake and lost a whole wall. After constant exposure to the elements everything now needs a bit of restoration. They are now working in a different part of Christchurch, but their past can still be seen".

Images, UC QuakeStudies

A digger being loaded onto the back of a truck. The photographer comments, "After clearing away the remains of a building in Christchurch, New Zealand destroyed by the February 22 earthquake the digger can now be transported to its next destination for destruction".

Research papers, The University of Auckland Library

Test results are presented for wall-diaphragm plate anchor connections that were axially loaded to rupture. These connection samples were extracted post-earthquake by sorting through the demolition debris from unreinforced masonry (URM) buildings damaged in the Christchurch earthquakes. Unfortunately the number of samples available for testing was small due to the difficulties associated with sample collection in an environment of continuing aftershocks and extensive demolition activity, when personal safety combined with commercial activity involving large demolition machinery were imperatives that inhibited more extensive sample collection for research purposes. Nevertheless, the presented data is expected to be of assistance to structural engineers undertaking seismic assessment of URM buildings that have existing wall-diaphragm anchor plate connections installed, where it may be necessary to estimate the capacity of the existing connection as an important parameter linked with determining the current seismic capacity of the building and therefore influencing the decision regarding whether supplementary connections should be installed.

Research papers, University of Canterbury Library

This study explores the impact post-earthquake images from Christchurch, New Zealand inserted into a task requiring sustained attention or vigilance have on performance, selfreports of task-focus, and cerebra activity using functional near-infrared spectroscopy (fNIRS). The images represent the current state of Christchurch; a city struggling to recover from devastating earthquakes that peaked in February, 2011, killing 185 people, injuring hundreds more and causing widespread and massive damage to infrastructure, land and building in the region. Crowdsourcing was used to gather a series of positive and negative photos from greater Christchurch to be employed in the subsequent experiment. Seventy-one Christchurch resident participants (51 women, 20 men) then took part in a vigilance task with the sourced images embedded to assess possible cognitive disruptions. Participants were randomly assigned to one of three conditions: embedded positive pictures, embedded negative pictures, or embedded scrambled image controls. Task performance was assessed with signal detection theory metrics of sensitivity A’ and β’’. Individuals viewing the positive images, relating to progress, rebuild, or aesthetic aspects within the city, were overall more conservative or less willing to respond than those in the other conditions. In addition, positive condition individuals reported lower task focus, when compared to those in the control condition. However, indicators of cerebral activity (fNIRS) did not differ significantly between the experimental groups. These results combined, suggest that mind wandering events may be being generated when exposed to positive post-earthquake images. This finding fits with recent research which indicates that mind-wandering or day dreaming tends to be positive and future oriented. While positive recovery images may initiate internal thoughts, this could actually prove problematic in contexts in which external attention is required. While the actual environment, of course, needs to recover, support agencies may want to be careful with employing positive recovery imagery in contexts where people actually should be paying attention to something else, like operating a vehicle or machinery.